Regarding Dice, you need to first lock the Client Seed and then click the Autoroll. You are probably doing it vice versa.
And can you send in PM your username so we can disable 2FA?
(EDIT: I tried many things to get it to work. Refreshing, waiting to set the autoroll preferences both before and after setting the Client Seed, trying multiple settings, etc. Every time I tried it, I set the Client Seed first and Locked it, pressed AutoRoll, and the rolls wouldn't function unless I had the Client Seed Unlocked so it generated them randomly.)
And sure.
We are checking your issue, just provide us with more information that we asked for through PM.